Pietro of Pappacarbone was an Italian abbot, bishop, and saint. He was abbot of La Trinità della Cava, located at Cava de' Tirreni. Born in Salerno, he had first been a monk at Cava under Leo I of Cava. He then was at Cluny from 1062 to 1068 and later became bishop of Policastro in 1079.